WPF ListBox

ListBox实现原理

它继承于Selector利用MouseEventArgs与MouseButtonEventArgs在点击时会将点击的Item设置为SelectItem，然后左键按住并且移动时会将鼠标下的Item设置为SelectItem。

具体方法

        protected override void OnMouseLeftButtonDown(MouseButtonEventArgs e)
        {
            this.SelectedItem = e.Source;
            base.OnMouseLeftButtonDown(e);
        }
        protected override void OnMouseMove(MouseEventArgs e)
        {
            if(e.LeftButton== MouseButtonState.Pressed)
            {
                this.SelectedItem = e.Source;
            }
            base.OnMouseMove(e);
        }